mirror of https://github.com/hashicorp/consul
119 lines
4.2 KiB
Markdown
119 lines
4.2 KiB
Markdown
---
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layout: commands
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page_title: 'Commands: Keyring'
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sidebar_title: keyring
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---
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# Consul Keyring
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Command: `consul keyring`
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The `keyring` command is used to examine and modify the encryption keys used in
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Consul's [Gossip Pools](/docs/internals/gossip). It is capable of
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distributing new encryption keys to the cluster, retiring old encryption keys,
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and changing the keys used by the cluster to encrypt messages.
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Consul allows multiple encryption keys to be in use simultaneously. This is
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intended to provide a transition state while the cluster converges. It is the
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responsibility of the operator to ensure that only the required encryption keys
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are installed on the cluster. You can review the installed keys using the
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`-list` argument, and remove unneeded keys with `-remove`.
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All operations performed by this command can only be run against server nodes,
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and affect both the LAN and WAN keyrings in lock-step. The only exception to this
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is for the `-list` operation, you may set the `-local-only` flag to only query
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against local server nodes.
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All variations of the `keyring` command return 0 if all nodes reply and there
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are no errors. If any node fails to reply or reports failure, the exit code
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will be 1.
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## Usage
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Usage: `consul keyring [options]`
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Only one actionable argument may be specified per run, including `-list`,
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`-install`, `-remove`, and `-use`.
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#### API Options
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@include 'http_api_options_client.mdx'
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#### Command Options
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- `-list` - List all keys currently in use within the cluster.
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- `-list-primary` - List all primary keys currently in use within the cluster.
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- `-install` - Install a new encryption key. This will broadcast the new key to
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all members in the cluster.
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- `-use` - Change the primary encryption key, which is used to encrypt messages.
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The key must already be installed before this operation can succeed.
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- `-remove` - Remove the given key from the cluster. This operation may only be
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performed on keys which are not currently the primary key.
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- `-relay-factor` - Added in Consul 0.7.4, setting this to a non-zero value will
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cause nodes to relay their response to the operation through this many
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randomly-chosen other nodes in the cluster. The maximum allowed value is 5.
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- `-local-only` - Setting this to true will force a keyring list query to only hit
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local servers (no WAN traffic). Setting `local-only` is only allowed for list
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queries.
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## Output
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The output of the `consul keyring -list` command consolidates information from
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all nodes and all datacenters to provide a simple and easy to understand view of
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the cluster. The following is some example output from a cluster with two
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datacenters, each which consist of one server and one client:
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```text
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==> Gathering installed encryption keys...
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==> Done!
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WAN:
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a1i101sMY8rxB+0eAKD/gw== [2/2]
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dc2 (LAN):
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a1i101sMY8rxB+0eAKD/gw== [2/2]
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dc1 (LAN):
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a1i101sMY8rxB+0eAKD/gw== [2/2]
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dc1 (LAN) [alpha]:
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a1i101sMY8rxB+0eAKD/gw== [2/2]
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```
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As you can see, the output above is divided first by gossip pool, including any network
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segments, and then by encryption key. The indicator to the right of each key displays
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the number of nodes the key is installed on over the total number of nodes in the pool.
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## Errors
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If any errors are encountered while performing a keyring operation, no key
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information is displayed, but instead only error information. The error
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information is arranged in a similar fashion, organized first by datacenter,
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followed by a simple list of nodes which had errors, and the actual text of the
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error. Below is sample output from the same cluster as above, if we try to do
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something that causes an error; in this case, trying to remove the primary key:
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```text
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==> Removing gossip encryption key...
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dc1 (LAN) error: 2/2 nodes reported failure
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server1: Removing the primary key is not allowed
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client1: Removing the primary key is not allowed
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WAN error: 2/2 nodes reported failure
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server1.dc1: Removing the primary key is not allowed
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server2.dc2: Removing the primary key is not allowed
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dc2 (LAN) error: 2/2 nodes reported failure
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server2: Removing the primary key is not allowed
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client2: Removing the primary key is not allowed
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```
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As you can see, each node with a failure reported what went wrong.
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